CN213717025U - Battery module, battery package and electric automobile - Google Patents

Battery module, battery package and electric automobile Download PDF

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Publication number
CN213717025U
CN213717025U CN202023288559.9U CN202023288559U CN213717025U CN 213717025 U CN213717025 U CN 213717025U CN 202023288559 U CN202023288559 U CN 202023288559U CN 213717025 U CN213717025 U CN 213717025U
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CN
China
Prior art keywords
battery
electric core
battery module
core group
row
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Active
Application number
CN202023288559.9U
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Chinese (zh)
Inventor
黄森
杨刚
黎文
朱聪
温海龙
郭军
丁永华
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Guangzhou Great Power Energy & Technology Co ltd
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Guangzhou Great Power Energy & Technology Co ltd
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Priority to CN202023288559.9U priority Critical patent/CN213717025U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

Abstract

The application discloses battery module, battery package and electric automobile relates to power battery technical field. The battery module comprises a battery core group, an insulation assembly and a connecting bar; the total negative electrode and the total positive electrode of the electric core group are respectively connected with the connecting row, and the connecting row is integrated with a first aluminum row and a copper row; the two first aluminum rows are respectively connected to the total positive electrode and the total negative electrode; the two copper bars are used for externally connecting the battery module; the insulation assembly is arranged on the outer side of the electric core group and used for insulation between the electric core group and the outside. The application provides a reducible assembly space's of battery module occupy is applicable to the side and puts the installation.

Description

Battery module, battery package and electric automobile
Technical Field
The application relates to the technical field of power batteries, in particular to a battery module, a battery pack and an electric automobile.
Background
With the gradual maturity of power battery manufacturing technology, electric vehicles have already been provided with the strength of competing with traditional fuel vehicles, and electric passenger vehicles, electric logistics vehicles, electric buses and electric low-speed vehicles increasingly appear in the lives of people in cities, rural areas and the like.
In the existing battery pack using the power battery, the battery module is usually placed with the lug upwards, and a stud is required to be arranged at the position of the lug to realize external connection. For some battery cases with insufficient space height, the battery modules need to be rotated 180 degrees and then placed on the rear side, when the battery modules are installed, the studs need to be installed by means of other tools, however, the assembling space between two adjacent battery modules is insufficient for installing the studs, and therefore the battery modules cannot be installed smoothly. Therefore, the conventional battery module is not suitable for side mounting.
SUMMERY OF THE UTILITY MODEL
The application provides a battery module, battery package and electric automobile to reduce the assembly space of battery module, so that the installation is put to the side of battery module.
In order to solve the above problems, the present application provides:
a battery module comprises a battery core group, an insulating assembly and a connecting bar;
the total negative electrode and the total positive electrode of the electric core group are respectively connected with the connecting row, and the connecting row is integrated with a first aluminum row and a copper row; the two first aluminum rows are respectively connected to the total positive electrode and the total negative electrode; the two copper bars are used for externally connecting the battery module;
the insulation assembly is arranged on the outer side of the electric core group and used for insulation between the electric core group and the outside.
In some possible embodiments, a first nut is arranged on one side of the first aluminum row for connecting the electric core group, and the first nut is used for locking a wire.
In some possible embodiments, the battery cell group comprises a plurality of battery cells connected in series, and adjacent battery cells are connected through a second aluminum row;
and a second nut is arranged on one side, close to the battery cell, of the second aluminum bar and is used for locking a wire.
In some possible embodiments, the insulating assembly includes an insulating end cap;
the insulation end cap is arranged on one side of the electric core group, which is provided with the total negative electrode and the total positive electrode.
In some possible embodiments, the insulating end caps are fixedly connected to at least two of the second aluminum rows by means of a snap.
In some possible embodiments, the battery module further includes a fastening assembly for fastening and connecting the cells of the cell pack.
In some possible embodiments, the fastener assembly includes a strap and two end plates;
the two end plates are respectively arranged on two opposite side surfaces in the battery cell group, and the two end plates are respectively arranged corresponding to the side surfaces of one battery cell;
the strapping tape is arranged around the electric core group; the strapping tape is passed around through one side of the two end plates, which is far away from the electric core group, so that the two end plates are tightly pressed on the electric core group.
In some possible embodiments, the battery module further includes a heating plate attached to a side of the cell group away from the total positive electrode.
In a second aspect, the present application further provides a battery pack including a plurality of the battery modules.
In a third aspect, the application also provides an electric automobile, which comprises the battery pack.
The beneficial effect of this application is: the application provides a battery module, including electric core group, insulating assemblies and run-on. The insulation assembly is arranged on the outer side of the electric core group and used for realizing insulation between the electric core group and the outside. The total positive pole and the total negative pole of electric core group are connected with a connecting bar respectively, and the connecting bar integration has first aluminium row and copper bar, and two first aluminium rows are connected respectively in total positive pole and total negative pole, and two copper bars are used for external other battery module etc..
In the prior art, the stud is riveted to the total positive pole and the total negative pole of the electric core group, and then the copper bar is connected to the stud, and the stud needs to occupy a certain space, and meanwhile, a certain assembly space needs to be met when the stud is installed. And in this application, directly arrange first aluminium and copper bar integrated the setting, first aluminium is arranged in connecting total positive pole and total negative pole. In the assembling process, the electric core group is not required to be connected with the stud, so that the occupied space of the battery module can be reduced. On the other hand, the use of tools for assembling the studs can be avoided, so that the required assembly space can be further reduced, and the requirement of the side-placing space of the battery module can be met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic view illustrating an exploded structure of a battery module;
fig. 2 is a schematic view illustrating a structure of a battery module;
FIG. 3 is a partially enlarged schematic view of portion A of FIG. 2;
fig. 4 shows a schematic diagram of a distribution structure of cells;
FIG. 5 shows a schematic view of a connection row;
FIG. 6 shows a schematic of a second aluminum row;
FIG. 7 shows a schematic view of a connection structure of an insulating end cap and a second aluminum row;
FIG. 8 shows a schematic structural view of an end plate;
fig. 9 shows a schematic cross-sectional view of an end plate.
Description of the main element symbols:
10-an electric core group; 10 a-total positive electrode; 10 b-total negative electrode; 11-electric core; 12-a first insulating sheet; 13-a second aluminum row; 131-connecting wings; 132-an interposer; 133-a second nut; 134-connection hole;
20-connecting rows; 21-a first aluminum row; 211-a first nut; 22-copper bar; 221-a first connection;
30-an insulating component; 31-an insulating end cap; 311-via holes; 32-a second insulating sheet; 33-a third insulating sheet; 34-a fourth insulating sheet;
40-a fastening assembly; 41-end plate; 411-end plate body; 412-a connecting seat; 413-support bars; 4131-stop block; 4141-first spacer block; 4142-a second head block; 415-a second connection; 4151-third nut; 42-strapping tape; 43-pressing strips; 431-an insulating sleeve;
50-heating plate; 51-a connection terminal;
60-buckling; 61-a limit end cover; 62-resilient arms.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example one
The embodiment provides a battery module which can be used as a power battery and used in an electric automobile to provide power for the electric automobile.
As shown in fig. 1 and 4, the battery module includes a battery pack 10, and the battery pack 10 is used for storing electric energy and providing power for the electric vehicle. The battery pack 10 is provided with a total positive electrode 10a and a total negative electrode 10b, and the total positive electrode 10a and the total negative electrode 10b are used for electrically connecting other battery modules or equipment and realizing electric energy output or input.
Referring to fig. 5, the total positive electrode 10a and the total negative electrode 10b of the electric core assembly 10 are respectively connected to a connection row 20. In the embodiment, the two connecting rows 20 have the same structure, and the connecting row 20 is integrated with a first aluminum row 21 and a copper row 22. One of the first aluminum rows 21 is connected to the positive electrode 10a of the battery cell assembly 10, and the other first aluminum row 21 is connected to the negative electrode 10 b. The two copper bars 22 are used for external connection, and specifically, the two copper bars 22 can be used for external connection of other battery modules or equipment. It can be understood that the end of the two copper bars 22 away from the first aluminum bar 21 is used for externally connecting other battery modules or devices. In some specific embodiments, the first aluminum row 21 and the copper row 22 are connected by heat and pressure welding.
In other embodiments, the first aluminum row 21 and the copper row 22 may be connected by ultrasonic welding, integral molding, or the like.
In the embodiment, the battery module further includes an insulating member 30, and the insulating member 30 is disposed at the outer side of the electric core pack 10. In use, the insulating member 30 may be used for insulating the battery pack 10 from other external devices, and for example, the insulating member 30 may be used for insulating between two adjacent battery modules and for insulating between the battery modules and the case when the battery pack is assembled.
In the prior art, the first aluminum row 21 connected to the total positive electrode 10a and the total negative electrode 10b of the cell group 10 needs to be connected to a stud, and then connected to the copper bar 22 through the stud, so as to realize external connection. Wherein, the double-screw bolt has certain height, and need be with the help of instruments such as spanner during the assembly to make the required assembly space who occupies of battery module can be bigger. However, the current battery pack for electric vehicles is also being developed to increase energy density, reduce cost, and reduce occupied space. When the battery module is laterally placed in the case of the battery pack, the assembly space between the two opposite battery modules is generally not sufficient for the installation of the stud bolt, and thus, the conventional battery module is not suitable for lateral placement. In addition, it should be noted that, as the first aluminum bar 21 and the copper bar 22 connected by the stud are used for a longer time, the first aluminum bar 21, the copper bar 22 and the stud are easy to undergo an oxidation-reduction reaction, i.e., corrosion, so that the passage of current is affected, and the service life of the battery module is shortened.
In the application, the copper bar 22 and the first aluminum bar 21 are directly integrated, namely the first aluminum bar 21 and the copper bar 22 are integrally arranged. Therefore, in the assembly process of the battery module, the action of assembling the copper bar 22 on the first aluminum bar 21 does not need to be independently carried out, the assembly time of the battery module is saved, and the assembly efficiency is improved. Meanwhile, the studs do not need to be arranged on the first aluminum row 21, so that the height of the battery module can be reduced, namely, the occupied space is reduced. When the battery module is assembled, the stud does not need to be assembled by a tool, so that the space required by assembly can be further saved, the space limit during side-assembly of the battery module can be met, and the installation cost can be reduced. When putting battery module side and installing in the box of battery package, can reduce the headspace between the two relative battery modules, make two battery module assemblies compacter, reduce the battery package volume.
Simultaneously, in this application, realize being connected through modes such as hot-pressing fusion, ultrasonic bonding or integrated into one piece between copper bar 22 and the first aluminium row 21 for the copper bar 22 surface of hookup location department and the surperficial in close contact with of first aluminium row 21, the copper bar 22 of hookup location department also can the in close contact with the molecule of first aluminium row 21, can effectively avoid going on of redox reaction, avoid hookup location department to take place to corrode promptly. Therefore, the connecting position of the copper bar 22 and the first aluminum bar 21 can be effectively protected, and the service life of the battery module is prolonged.
Example two
The embodiment provides a battery module, and it can be understood that the embodiment is a further improvement made on the basis of the first embodiment.
As shown in fig. 1 and 4, in the embodiment, the battery pack 10 includes a plurality of battery cells 11, and the plurality of battery cells 11 are connected in series in sequence. The number of the battery cells 11 is not particularly limited, and may be set as needed. Illustratively, the cells 11 may be arranged in three, four, five, seven, nine, ten, eleven, and so on. The positive electrode of one cell 11 of the two cells 11 near the end is used as the total positive electrode 10a of the cell core group 10, and the negative electrode of the other cell 11 is used as the total negative electrode 10b of the cell core group 10.
Correspondingly, the two connecting rows 20 are correspondingly connected to the battery cells 11 at the two ends, respectively. Specifically, the first aluminum bars 21 of the two connection bars 20 can be directly welded to the electrode posts of the corresponding battery cells 11, so as to achieve connection with the corresponding battery cells 11, thereby achieving transmission of electric energy.
A first insulating sheet 12 is clamped between any pair of two adjacent battery cells 11, and the first insulating sheet 12 is used for insulating the two adjacent battery cells 11. In the embodiment, the battery cells 11 and the first insulating sheet 12 can be fixedly connected by structural adhesive, so that the battery cells 11 in the battery core pack 10 can also be fixedly connected together. Wherein, the structure is glued and can be chooseed for use silica gel, polyurethane glue etc. and in the use, the structure is glued and also can be absorbed the vibration of electric core 11, avoids producing resonance between each electric core 11. Thereby improving the connection strength between the battery cells 11 and avoiding the mutual separation between the battery cells 11. The first insulating sheet 12 may be a Polycarbonate (PC) sheet.
In the embodiment, two adjacent battery cells 11 are connected through the second aluminum row 13. Referring to fig. 6 again, the second aluminum row 13 includes two connecting wings 131 symmetrically disposed, and the two connecting wings 131 are connected by an adapter plate 132. The two connecting wings 131 are disposed on the same plane, and the adapter plate 132 protrudes from the plane on which the two connecting wings 131 are disposed. It can be understood that the adapter plate 132 is disposed to protrude from the two connecting wings 131, and a rib-like structure is formed between the two connecting wings 131.
The second aluminum bar 13 covers the gap between two adjacent battery cells 11, and the two connecting wings 131 respectively extend to the electrode posts of the corresponding battery cells 11. The connection wing 131 and the electrode column of the battery cell 11 may be fixedly connected by welding, so that electrical connection may also be achieved. The adapter plate 132 protrudes in a direction away from the battery cell 11. In some embodiments, the two connection wings 131 and the adapter plate 132 are integrally formed.
Two second nuts 133 are riveted to one side of the adapter plate 132 close to the battery cell 11 to facilitate wire locking on the second aluminum row 13. For example, the connection of wires such as a voltage collecting wire can be facilitated, so that a Battery Management System (BMS) in the Battery pack can conveniently collect and monitor data such as voltage and current at the corresponding position of the Battery module.
As shown in fig. 5, the first aluminum row 21 of the connecting row 20 is also provided with a corresponding first nut 211, and the first nut 211 is provided to facilitate the wire locking on the first aluminum row 21.
In order to save the assembly space, the copper bar 22 can be folded to adapt the copper bar 22 to the space in the battery pack, and the assembly space occupied by the copper bar 22 can be reduced. One end of the copper bar 22, which is far away from the first aluminum bar 21, is provided with a corresponding first connecting portion 221, and the first connecting portion 221 is provided with a corresponding through hole, so that the first connecting portion 221 can be connected with other battery modules or devices.
As shown in fig. 1 and 2, the insulation assembly 30 includes an insulation end cap 31, a second insulation sheet 32, a fourth insulation sheet 34, and two third insulation sheets 33. Wherein, the insulating end cap 31 is covered on the side of the electric core group 10 provided with the total anode 10a and the total cathode 10 b. Therefore, when the battery module is installed in a side-placing mode, the electrode posts in the two oppositely-arranged battery modules can be prevented from being in contact with each other to cause short circuit.
The second insulation sheet 32, the fourth insulation sheet 34 and the two third insulation sheets 33 are disposed around four sides of the electric core assembly 10, and the second insulation sheet 32, the fourth insulation sheet 34 and the two third insulation sheets 33 are disposed around the insulation end cap 31 correspondingly. It can be understood that the side of the electric core group 10 opposite to the insulated end cap 31 is not provided with an insulating sheet.
When the battery module is laterally placed, one surface above the electric core assembly 10 is the upper surface of the electric core assembly 10, and one surface below the electric core assembly 10 is the lower surface of the electric core assembly 10. The second and fourth insulation sheets 32 and 34 are disposed corresponding to the upper and lower surfaces of the electric core assembly 10, respectively, and the two third insulation sheets 33 are disposed corresponding to the surfaces of both ends of the electric core assembly 10, respectively. Meanwhile, the second insulation sheet 32, the fourth insulation sheet 34 and the two third insulation sheets 33 are all attached to the electric core assembly 10. In some embodiments, the second insulating sheet 32, the fourth insulating sheet 34 and the third insulating sheets 33 can be PC sheets, and the insulating end cap 31 can also be formed by vacuum forming of PC sheets.
Of course, in other embodiments, the insulating end cap 31 may also be injection molded from a PC material.
As shown in fig. 2, fig. 6 and fig. 7, further, the insulating end cap 31 can be fixedly connected to at least two second aluminum rows 13 in the electric core assembly 10 by means of a buckle 60.
Specifically, the adapter plate 132 of the second aluminum row 13 is provided with a connecting hole 134, and the connecting hole 134 is correspondingly disposed between the two second nuts 133. At least two through holes 311 are formed in the insulating end cover 31, and the two through holes 311 are used for connecting the buckle 60, so that the insulating end cover 31 is fixedly installed on the electric core group 10. It will be appreciated that a clip 60 is attached at each via 311. In this embodiment, the insulating end cap 31 is provided with two through holes 311, and the two through holes 311 are respectively disposed at two ends of a diagonal line of the insulating end cap 31, so that the insulating end cap 31 can be stably mounted on the electric core assembly 10.
In other embodiments, three, four, five, etc. through holes 311 may be provided on the insulating end cap 31, and all of them can be connected to the second aluminum row 13 on the electric core set 10 by the fastener 60. It can be understood that a part of the plurality of through holes 311 is disposed near the upper surface of the electric core assembly 10, and another part is disposed near the lower surface of the electric core assembly 10, so that the insulated end cap 31 is stably mounted on the electric core assembly 10.
The latch 60 includes a connecting retaining cap 61 and at least two resilient arms 62. The at least two elastic arms 62 are disposed on the same side of the limiting end cover 61 and are uniformly distributed. In this embodiment, the limiting end cap 61 is connected with two elastic arms 62, and the two elastic arms 62 are symmetrically arranged.
Wherein, the diameter of the limiting end cover 61 is larger than that of the via hole 311. One end of each elastic arm 62, which is far away from the limiting end cover 61, is provided with a convex part, and the convex parts on the two elastic arms 62 are away from each other. When the elastic arms 62 are close to each other and contracted, the outer diameter of the arc where the two convex parts are located is smaller than the diameter of the via hole 311 and the diameter of the connecting hole 134, so that the two elastic arms 62 of the buckle 60 can smoothly pass through the insulating end cover 31 and the second aluminum row 13.
Meanwhile, when the two elastic arms 62 are in a natural state, the outer diameter of the arc where the two convex parts on the two elastic arms 62 are located is larger than the diameter of the connecting hole 134. Therefore, after the elastic arm 62 is released through the insulating end cap 31 and the second aluminum row 13, the convex part on the elastic arm 62 can abut against the side of the second aluminum row 13 close to the battery cell 11. Thereby, the fixed connection of the insulation end cap 31 and the electric core group 10 is realized.
In some specific embodiments, the two protrusions of the two elastic arms 62 are inclined at a side facing away from each other, so that the end of the clip 60 close to the battery cell 11 is in an inverted cone shape, thereby facilitating the connection of the clip 60 to the insulating end cap 31 and the second aluminum row 13 directly by pressing.
In an embodiment, the clip 60 may be made of an insulating material, for example, a PC material.
The insulating end cap 31 is provided with a corresponding concave portion corresponding to the position of the via hole 311, and the concave portion is arranged in a direction close to the battery cell 11. During the assembly, insulating end cover 31 upper concave part can with the adapter plate 132 laminating setting on the second aluminium is arranged 13 to can make mutual support between adapter plate 132 and the insulating end cover 31, avoid taking place the deformation because of the atress, and then improve connection stability.
In some embodiments, the battery module further includes a heating plate 50, and the heating plate 50 is attached to the side of the electric core pack 10 away from the insulating end cap 31. In use, heating plate 50 can be used to heat electric core group 10 to make electric core group 10 start smoothly in comparatively cold environment, also can make electric core group 10 avoid the influence of cold environment.
The heating plate 50 may include two layers of silica gel and a heating wire disposed between the two layers of silica gel, and the silica gel may transfer heat generated by the heating wire to the electric core assembly 10. Wherein, the silica gel has viscosity, so that the heating plate 50 can be attached to the electric core pack 10. Meanwhile, the silica gel can also realize the insulation effect of the side surface of the electric core group 10 and the outside.
The heating plate 50 is further provided with three connection terminals 51, one of the connection terminals 51 is connected with a temperature sensor, and the other end is used for connecting a battery pack of a BMS system. The temperature sensor is arranged in the two silica gels and can be used for detecting the heating temperature of the heating plate 50. The other two terminals 51 are used as the positive and negative electrodes of the heating plate 50 for connecting with corresponding power sources to supply power to the heating plate 50.
Further, as shown in fig. 1 to 4, the battery module further includes a fastening assembly 40, and the fastening assembly 40 is used for fastening the electric core pack 10. Specifically, the fastening assembly 40 is used to further reinforce the connection between the battery cells 11 in the battery cell pack 10, so as to prevent the battery cells 11 from being separated from each other.
In one embodiment, the fastener assembly 40 includes a strap 42 and two end plates 41. Wherein, two end plates 41 are respectively arranged at two ends of the electric core group 10 and attached to the third insulation sheet 33 at the corresponding side. The binding band 42 is disposed around the electric core assembly 10, and the binding band 42 is passed around through the side of the two end plates 41 far away from the electric core assembly 10, so that the two end plates 41 can be pressed and attached to the two ends of the electric core assembly 10. Meanwhile, the cells 11 in the cell pack 10 can be fastened to each other, so that the cells 11 are prevented from being separated from each other. It will be appreciated that the straps 42 are placed in tension. In some embodiments, the end plate 41 may be an iron end plate; the strapping 42 may be plastic steel strap.
In other embodiments, the strapping tape 42 may be a stainless steel tape, a plastic tape, an insulating rubber tape, or the like. It can be understood that when the strapping tape 42 is made of a stainless steel tape, an insulating bush is sleeved on the strapping tape 42 at a position corresponding to the battery cell 11 to realize insulation.
When the battery module is used in a side-by-side mode, the binding tapes 42 are correspondingly wound on the upper surface, the lower surface and two end surfaces of the electric core group 10. It can be understood that the strapping tape 42 is disposed at the outer side of the second insulation sheet 32 and the fourth insulation sheet 34, that is, one side of the second insulation sheet 32 and the fourth insulation sheet 34 away from the electric core set 10, and then the strapping tape 42 can fix the second insulation sheet 32 and the fourth insulation sheet 34, so that the second insulation sheet 32 and the fourth insulation sheet 34 are fixedly attached to the electric core set 10.
In the embodiment, the strapping tapes 42 may be provided in a number of one, two, three, four, six, etc., and may be provided specifically according to the need, and is not limited specifically herein. When the cable core assembly 10 is installed, the pre-fixing connection is realized through structural adhesive, so that the installation of the strapping tape 42 is facilitated, and the installation difficulty of the strapping tape 42 is reduced.
The two end plates 41 have the same structure, and an alternative description thereof will be given below.
As shown in fig. 8 and 9, the end plate 41 includes an end plate body 411 and a connecting seat 412. Wherein, the end plate body 411 is a plate-shaped structure, and one surface of the end plate body 411 is completely attached to the third insulation sheet 33 on the corresponding side. The connecting base 412 is fixedly disposed on one side of the end plate body 411 away from the third insulating sheet 33, and is disposed near one end of the lower surface of the electric core assembly 10. The connection holder 412 may be fixedly connected to the end plate body 411 by welding.
One end of the connecting seat 412 near the lower surface of the electric core assembly 10 is provided with a plate-shaped structure, which is arranged in parallel with the lower surface of the electric core assembly 10. The plate-shaped structure is provided with a runway-shaped connecting hole for a bolt to pass through. Therefore, the connecting seat 412 can be fixedly connected to the bottom of the box body of the battery pack through the bolts and other structures, namely, the battery module is fixedly installed on the box body of the battery pack, and the battery module is prevented from shaking randomly.
Two sides of end plate body 411 all are provided with support bar 413, and two support bars 413 correspond the upper surface and the lower surface setting of electric core group 10 respectively, and two support bars 413 all set up in one side that third insulating piece 33 was kept away from to end plate body 411. The supporting strip 413 is used for supporting the strapping tape 42, the supporting strip 413 can be formed by bending a plate-shaped structure on the end plate body 411, and one side of the supporting strip 413, which is far away from the end plate body 411, is in an arc shape so as to reduce the abrasion of the end plate 41 to the strapping tape 42. Even if the battery module is vibrated to cause the relative movement between the binding belt 42 and the end plate 41, the abrasion of the binding belt 42 by the end plate 41 can be greatly reduced, and the problem that the binding belt 42 is broken is avoided.
Further, the supporting bar 413 is provided with a pair of stoppers 4131, and the width distance of the strapping tape 42 is limited between the pair of stoppers 4131. The limiting block 4131 is disposed corresponding to the position of the binding band 42, so that the limiting block 4131 can limit the binding band 42, and the binding band 42 is prevented from shaking randomly relative to the supporting bar 413, that is, the binding band 42 is prevented from shaking randomly relative to the end plate 41, abrasion of the end plate 41 to the binding band 42 is further reduced, and meanwhile, the stability of binding the binding band 42 to the electric core pack 10 can be ensured.
A first spacer block 4141 and a second spacer block 4142 are also provided on the side of the end plate body 411 remote from the third insulating sheet 33. The first and second blocks 4141 and 4142 are disposed in a direction along the strap 42 to provide further support to the strap 42 by the first and second blocks 4141 and 4142 to enhance stability of the strap 42 and reduce vibration of the strap 42. The first and second blocks 4141 and 4142 may have a hollow square tubular structure, so that the first and second blocks 4141 and 4142 have a large contact area with the strapping band 42, thereby improving the support stability. On the other hand, the weight of the end plates 41, that is, the weight of the battery module, can also be reduced.
As shown in fig. 2, the fastening assembly 40 further includes a pressing bar 43 for further improving the connection stability of the electric core assembly 10 and preventing the electric cores 11 from vibrating and dislocating. Specifically, two pressing strips 43 are provided, one pressing strip 43 is arranged corresponding to the center line position of the upper surface of the electric core assembly 10, the other pressing strip 43 is arranged corresponding to the center position of the lower surface of the electric core assembly 10, and the two pressing strips 43 have the same structure.
Correspondingly, two second connecting portions 415 are disposed on the end plate 41, and the two second connecting portions 415 are disposed corresponding to the upper surface and the lower surface of the electric core pack 10, respectively. Illustratively, in the second connecting portion 415 disposed close to the upper surface of the electric core assembly 10, a third nut 4151 is riveted on a side thereof far away from the upper surface of the electric core assembly 10, and both ends of the pressing bar 43 are correspondingly provided with corresponding bolt holes. Thus, both end portions of the pressing bar 43 may be fastened to the end plates 41 of the corresponding sides by bolts so that the pressing bar 43 is pressed against the upper or lower surface of the electric core pack 10.
In an embodiment, the pressing bar 43 may be a steel pressing bar, and an insulating sleeve 431 is sleeved on the pressing bar 43, and the insulating sleeve 431 is disposed corresponding to the position of the electric core assembly 10. That is, the compression beads 43 for connecting both ends of the end plate 41 may be formed without the insulating sleeve 431.
When installing the battery module in the box of battery package, can put the installation with the battery module side, and can put the rubber pad at the surface pad of battery module and battery package box contact to can absorb the vibration that the vehicle march in-process produced, reduce the vibration of battery module.
EXAMPLE III
The embodiment provides a battery pack, which comprises a BMS system and a plurality of battery modules provided in the first embodiment or the second embodiment.
The specific number of the battery modules may be set as required, and is not particularly limited herein. For example, the battery modules may be provided in one, two, four, five, six, etc. groups. The BSM system may be used to control and detect the operation of each battery module.
Example four
The embodiment provides an electric automobile, which comprises the battery pack provided by the third embodiment, wherein the battery pack is used for providing power for the electric automobile.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. A battery module is characterized by comprising an electric core group, an insulating assembly and a connecting bar;
the total negative electrode and the total positive electrode of the electric core group are respectively connected with the connecting row, and the connecting row is integrated with a first aluminum row and a copper row; the two first aluminum rows are respectively connected to the total positive electrode and the total negative electrode; the two copper bars are used for externally connecting the battery module;
the insulation assembly is arranged on the outer side of the electric core group and used for insulation between the electric core group and the outside.
2. The battery module according to claim 1, wherein a first nut is arranged on one side of the first aluminum row for connecting the electric core group, and the first nut is used for locking a wire.
3. The battery module according to claim 1, wherein the cell pack comprises a plurality of cells connected in series, and adjacent cells are connected through a second aluminum row;
and a second nut is arranged on one side, close to the battery cell, of the second aluminum bar and is used for locking a wire.
4. The battery module of claim 3, wherein the insulating assembly comprises an insulating end cap;
the insulation end cap is arranged on one side of the electric core group, which is provided with the total negative electrode and the total positive electrode.
5. The battery module of claim 4, wherein the insulating end caps are fixedly attached to at least two of the second aluminum rows by snap-fitting.
6. The battery module according to claim 3, further comprising a fastening assembly for fastening and connecting the cells of the cell pack.
7. The battery module of claim 6, wherein the fastener assembly comprises a strap and two end plates;
the two end plates are respectively arranged on two opposite side surfaces in the battery cell group, and the two end plates are respectively arranged corresponding to the side surfaces of one battery cell;
the strapping tape is arranged around the electric core group; the strapping tape is passed around through one side of the two end plates, which is far away from the electric core group, so that the two end plates are tightly pressed on the electric core group.
8. The battery module according to any one of claims 1 to 7, further comprising a heating plate attached to a side of the cell group away from the total positive electrode.
9. A battery pack comprising a plurality of battery modules according to any one of claims 1 to 8.
10. An electric vehicle comprising the battery pack according to claim 9.
CN202023288559.9U 2020-12-30 2020-12-30 Battery module, battery package and electric automobile Active CN213717025U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023288559.9U CN213717025U (en) 2020-12-30 2020-12-30 Battery module, battery package and electric automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202023288559.9U CN213717025U (en) 2020-12-30 2020-12-30 Battery module, battery package and electric automobile

Publications (1)

Publication Number Publication Date
CN213717025U true CN213717025U (en) 2021-07-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202023288559.9U Active CN213717025U (en) 2020-12-30 2020-12-30 Battery module, battery package and electric automobile

Country Status (1)

Country Link
CN (1) CN213717025U (en)

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